Tread for pneumatic tires.



No. 865,288. I PATENTED SEPT. 8, 1907. y

E. K. BAKER & G. G. HAWLEY TREAD FOR PNEUMATIC TIRES.

APPLIOATION FILED MAY 16,1907.

2 sHEBTs-smm 1;

I PATENTED SEPT. 3, 1907. E.' K. BAKER & U. G. HAWLEY. TRBADFOR PNEUMATIC TIRES.

2 SHEETSSVHBETI 2.

' jizven%rs:

APPL'IOTION FILED MAY 16, 1907.

5mm; We),

like vmetallic .p

UNITED-sures PATENT OFFICE.

ERLE 1'1. BAKER AND CHARLES GILBERT HAWLEY, OF CHICAGO, ILLINOIS.

'IREAD iNEUMATIC TIRES.

jlio. 365, 88.

' i" specifica'tion of Letters Patent. Application iiled May 16,1907. Serial No. 374,059.

Patented Sept. a, 1907.

To all whomitmay concern: I II Be'it known that we, ERIIJE BnKER and CHARLES GILBERT Hawnnr,citizens of'theUnited States, and residents'QfChicagoQ'LCeok' county, Illinois, have invented certain new and useful) Improvements in Treads for- Pneumatic Tires, of which the following is a full,-' clear,:f and exactjdescription, such as will enable others skilled 1 in the-art towhichit appertains to make and use the same.;-" r

Our' invention relates to pneumatic tirecasings" or tread portions of such articles.

shoes and has special reierence to improvements inthe non-skid tire pfimproved construction.

With thisobj-ect view, our invention consists in a pneumatic ti'recasing or, shoe having an envelop or tread portion which contains agr at number of staple I arts embedded therein, the 'endsflof parts projecting outwardly' through through, the suriacejf said tread portio I 'Ourtinvention willt-abeinore readily 'unde'r s too y reference tof the accompanying drawings part of this specification and'in which;

of a casing ot modified form in section; Fig. 3is a perspective view of our novel tire casing; Figs. 4 and 5 are sectional views of tread portions of different forms as they'a'ppear before being'applied to the tire casing and Figs; 6, 7 and 8 are iace views of portions of treads, illustrating several ways of arranging the metallic parts strips 5 are embedded. The outer'por'tion of the-tread contains a large number of metallic, staple-like or U- shaped parts ii, the closed, rounded ends of whichfare preferably positionedto substantially rest upon the interierence strips,-5. These parts are usually formed of steel wire and their ends pierce the surface 7 of the-casing; therefore, they contact, the ground or road surface Q I and, firmlyengaging therewith, aid the rubber surface in preventing slippage oi the wheel. In manufacturing this tire, we prefer to form the tread or at least a portion thereof separately from the remainder of the tire casing,

and this may be done conveniently by simply driving the II-shaped parts or staples through the inner side of the treadportion, 4, as shown in Figs. 4 and 5 In some cases we provide'the inner surface of the tread ,8, ,througl1 which the staples are driven. I

It will be obvious that the staples may be arranged in various forms. Several of these forms or arrangements are shown in Figs. 6, '7 and 8, preference being given to the'arrangerhent shown iii Fig. 7 When first inside, the ends of the U-shaped parts do not show through the skin of the tire, but after a little use the surface of the .tire will present substantiallythelappearance repre J sentedin Fig. 3. I

I fact that a tire having atread 'portion of our invention may be wrapped and vulcanized after the manner of 'ther so-call ed wrapped tires and need not be formed in a ornpleteor closed mold. r

avingthus described our invention, we claim as new and desire to secure by Letters Patent;

A resilient tire for vehicles, having a tread. portion I I I cohtai'ning an interference strip of fabric, vulcanized Figurelis asectionalviw oia'tirecasm I r shoe embodyingour invention'yFig. v2 is'a similar sectionalview 'therein, and also containing a large number of staplelike-meta llic parts having' closed, rounded ends in sub- Lstantial conta ct"with said interference.l it rtip and presenting their endsat the surface 6f said "tread portion, substantially. as and for the purpose specified. 2. A pneumatic tire'having a tread portion, containing an interference strip, vulcanized therein, and also containing 11 large iiumber of diagonally positioned staple likemetallic parts havingclosed, rounded ends in sub- .stantial contact with said interference strip and presenting their ends at the surface of said tread. portion, sub stantially as and for the purpose specified.

3. A pneumatic'tire having a tread portion containing two interference, strips of fabric, vulcanized therein, and also containing a large number of U-shaped metallic parts, extending through the outermost interference strip, having closed, rounded ends in substantial contact with the inner interference strip and presenting their ends at the surface of said tread portion, substantially as and for the purpose specified. L

4. A pneumatic tirehaving a vulcanized tread portion, containing a large number of U-shapedmetallic parts hav "ing'closed yrou'nded ends and straight sides or legs, said metallic parts being embedded in said tread portion and presenting their open ends at the surface thereof, substantially as and for thepurpose specified. I

Intestimony whereof, we have hereunto set our hands this 4th day of May, 1907, in the presence of two subscribing witnesses.

ERLE K. BAKER.

I CHARLES GILBERT HAWLEY.

Witnesses: i

M. SIMON,

A. W. Nnnsoir.

-A particular advantage oiour invention resides in the I portion with a lining or outer interference strip of cloth, 

